Respuesta :

Answer: 4 (parabola)

1, 2, and 3 are linear slopes
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Answer:

Graphs of the following equations are straight lines except y =x² + 3.

Step-by-step explanation:

Graph of the equation y =x² + 3 represents a parabola.

Equation of straight line: ax + by = c.

Here, a, b and c are real numbers and x and y are variables, each with a degree of 1.